M atc hin g - m ac hin e



' (No Modem B. G. LUTHER.

MATCHING MACHINE.

Patented Oct. 15, 1889.

Nal-113,073.

(No Model.) sheets-Sheet 2. B. G. LUTHER.

MATCHING MACHINE. l No. 413,073. Pagented Oct. l5, 1889.

(No Model.) 5 Sheets-Sheet 3.

B. G. LUTHER.

- MATCHING MACHINE. No. 413,073.- Ptented Oct. 15, 1889.

T e l N. PETERS, Phnmmhogmpher. wnshingmn. D,Cy

(No Model.) 6 Sheets-Sheet 4.

B. G. LUTHER.

MATCHING MACHINE.

Patented'Oot. l5, 1889.

N. PETERS. Pham-ummm', wamngwn. D, c.

6 Sheets-Sheet 5.

(No Model.)

B. G. LUTHER.

MATCHING MACHINE.

Patented Oot. 15.1889.

Win/waff N. PEYERS. Plwlo-mhuraprwr. wnsningrnmmc UNITED STATES PATENT OEEICE.

BENJAMlN G. LUTHER, OF ORCESTER, MASSACHUSETTS.

MATCHING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 413,073, dated October 15, 1889.

Application iiled May 3, 1889. Serial No. 309,477. (No model.)

To a/ZZ whom t may concern:

Be it known that l, BENJAMIN G. LUTHER, a citizen of the United States, residing at Worcester, in the county of lVorcester and State of Massachusetts, have invented a new and useful Improvement in MatchingeMachines, of which the following is a specification.

The object of my invention is to provide suitable means for guiding a board centrally to the cutters in a machine for making a tongue and groove simultaneously at the opposite edges of a board, and also for varying the lateral position of one of the cutters with reference to the plane of the other to provide for the proper matching of a Warped board; and my invention consists in so connecting the carriers of the shafts of the feed-rollers with each other that when one of the said carriers is moved in either direction from the plane of the cutter the carrier of the shaft of the opposite feed-roller will be moved equally and simultaneously in the opposite direction, so as to preserve the centrality of the cutter with the feed-rollers.

It also consists in so connecting the pivoted guides for the opposite edge of the board that when the end of one of the said pivoted guides is moved in either direction from the plane of the cutter the end of the opposite pivoted guide will be moved equally and si` multaneously in the opposite direction, so as to preserve the centrality of the cutter with the said guides; and it also consists in pivoting the holding-frame for the shaft of one of thecutters so that the said holdingframe and shaft may have a limited endwise movement to provide for the wind or twist in a warped board.

Figure 1 represents a side elevation of a matching-machine provided with my improve ment. Fig. 2 represents a top view of the same with the upper cutter removed, its pivoted holding-frame and a portion of the bedframe of the machine being broken away to show the pivoted frame of the lower cutter. Fig. 3 is a top view of the pivoted holdingframe of the upper cutter. FigAc is a corresponding side elevation of the same. Fig. 5

is a detail top view showing the feeding-rollers. Fig. 6 is 'a detail elevation showing a are views illustrating the mechanism ofthe pivot-ed guides for the upper edge of the boardV Fig. l1 represents a section taken in the line c x of Fig. 3.

ln the accompanying drawings, A is the frame of the machine, and B the feeding-table. The driving-shaft F is supported in the bearings a a of the bracket G, which is attached to one end of the frame A, and upon the shaft F are placed the pulleys J and J for driving the cutters. The bracket Gf is provided with the inwardlylirected ears lf' b2, to` which are pivoted the swivel-joint pieces a? o3, which are adapted for a limited horizontal vibrating movementupon the axes of the pivot-bolts c2, which serve to hold the said jointpieces to a plane seat upon the top of the ears b2. Between the ears d2 cl2 of the pivoted jointpieces ct'v a3 are pivoted the hars c2 e2, which are made of equal length and are pivoted by means of the bolts f2 to the bearing-frame g2, which carries .the shaft L of the upper cutter Q.

Upon the shaft L is placed the pulley H, from which connection is made by open belt `v with the pulley J upon the shaft F, as shown by the broken lines in Fig. 1; and in order to hold the pivoted bars e2 e2 in line with each other without twisting, I carry from their outer ends inwardly an arm h2, which bears upon the framev g2, the ends Ij2 of the said arms being'held under the cap-piece i2, so that the said ends may havealimited horizontal movement under the said cap, which is held in proper position by means of a screw k2, as shown in Fig. 11.

Upon the bed-frame A of the machine, near the forward edge of the frame g2, is bolted the curved upwardly projecting guide Z2, and upon the forward edge of the frame gzis placed the spring-guide m2, provided with the lips 'n2 n2, which loosely embrace the edge of the' guide Z2, and with the ears o2 02. Upon the frame g2 is formed an ear p2,and between the IOO ,ear p2 and the ears o2 o2 are placed the open spiral springs q2 q2. The frame g2 being loosely held by the spring-guide fm2, the action of the .springs q2 q2 will be such as to return the frame g2 to the central position, when the frame' has been forcibly moved in either direction from said position. The frame g2 and vits attachments are counterbalanced by means of the bent bar r2, which is suspended by means of the links s2 S2 from the pivot-bolts t2 of the swivel-joint pieces a2 a5, and which supports the balancing-weight u?. The ends Ui of the bent bar r2 are turned outwardly under the pivoted bars c2 c2 and serve to exert a balancing upward pressure upon the under side of the said bars, and the frame g2 can be raised to its proper working position by means of the pedal ai', which is connected with the bar r2 by means of the rod r3.

To 'the bell-crank lever O, attached toa short shaft d, which is held in suitable bearings at the under side of the frame g2, is pivoted the guide P by means of the screw-stud e, which stud is located a short distance belowthe shaft L, and upon the frame g2 is formed an earf, to the upper end of whichis pivoted the bolt g, provided with the thumbnut h, the said bolt g passing through a slot in the upwardly-extending arm 7' of the bellcrank lever O, and upon the bolt g, between the ear f and the arm j, is placed the spiral spring k, whereby upon screwing up the thumb-nut h the bearing-surface of the guide P will be carried downward from the cutter L, and upon reversing the said nut the bearingfsurface will be carried upward toward the cutter-shaft; and by this means the depth of the groove made by the cutter Q in the edge of the board can be properly regulated. The cutter Q is held upon a sleeve m, which is secured by a set-screw to the shaft L, and provided with a nut n, adapted to screw up against the side of the cutter.

In order that the guide P shall be held in the same parallel position with the feed-table B at all required positions of the pivoted frame g2, I pivot one end of the rod R to an elongated ear d2 of the pivoted joint-piece a3 and the other end of the same to the side of the main plate s of the guide P at the screwstud r above the shaft L, so that the rod R will form a portion of a parallel movement to preserve the proper relative position of the guide -P through the extreme limit of the vertical working movement of the frame g2. The guide-plate S is provided with an inclined under surface s, which is adapted to engage with the forward end of the board, so that the continued forward movement of the board after the first contact with t-he incline s, caused by the forward feeding movement of the rollers E E, will serve to raise the frame g2 and the cutter Q to the proper elevation to operate upon the edge of the board, and the cutter will thereafter be automatically varied in height according to the width of the board, thus providing for any required taper in the same. To the main plate s of the guide P at the opposite ears 2v2 tu2 are pivoted the side guides 032 x2, which are inclined toward each other in a forward direction, so that when the end of the board strikes the incline s of the guide P at near the pivoting-point of the side guides 002 .r2 they will be gradually forced apart at their free ends; and in order to allow such lateral movement of the guides :v2 x2 to accommodate boards of varying thickness, and still maintain the cutter in a central position between the guides, I pivot the T-shaped lever b3 to the top of the main plate s of the guide P at the pivot-stud c3, and make connection from the opposite arms d3 d3 of the lever b3 to the ears e3 e3 of the pivoted side guides m2 x2 by means of the connecting-links f3 f3, so that when movement is imparted to one of the side guides in either lateral direction a corresponding opposite movement will be imparted to the opposite side guide; and when the cutter Q is once placed centrally between the inner faces of the side guides, then for any required variation in the opening between the said guides the central position of the cutter will be maintained, so that the groove will always be made in the center of the board without requiring special adjustment of the guides, as heretofore.

In order to have the side guides m2 m2 press properly against the side of the board to hold the same firmly and, when necessary, cause a lateral movement of the cutter-holding frame g2, I pivot a rod g3 to the outer end h3 of the lever b3, and pass the screw-threaded outer end of the said rod loosely through an eye t3 at the upper side of the plate s', and between the eye 3 and a collar .7'3 upon the said rod I place the spiral spring 7c3, the tension of which can be adj usted,as desired,by moving the said collar, and upon the outer end of the rod g3, I place the adjustablecollar Z3. The side guides .r2 :t2 are each provided at their inner sides with an attached shoe m3, which rests upon the edge of the board d5, as shown in the section, Fig. 8, the forward portion of the main plate s of the guide P being broken away in Fig. l() in order to show the upper edge of the said slices and the edge of the centrally-arranged cutter Q,

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the curve of the lower face of the shoe m3 being shown by the dotted line in the side elevation of the guide P, Fig.- 9.

In order. to properly support the forward end of the side guides @62992,I provide a fiange 'ns upon the inner side of the curved end portion of the main plate s of the guide P, and form a hook 03 upon the guide @02,which hook catches over the edge of the said flange and allows the proper lateral movement of the guide.

The shaft S, which carries the lower-cutter T to form the tongue in the' edge of the board, is held in a frame V, which is pivoted to the bed-frame A at the point e o, the said frame V being provided with the attached downwardly- IZO turned arm w, the lower end of which is provided with the pedal fr, and to an arm y, eX- tending forward from a line joining the pivoting-points of the frame V, is secured the p counterbalancing-weight Z, which is to be so proportioned that the pedal c will be held in its elevated position by means of the said weight. The shaft S is provided with a pulley WV, which is driven from the pulley J by means of the cross-belt et. (Shown by the broken lines in Fig. l.)

The feeding-rollers E E E E are held upon the projecting ends of the upright shafts 133, which are held in suitable bearings 'in the separate carriers q3 q3 g3 gf, the said carriers being arranged parallel to each other at opposite sides of the vertical slide-bed r3, and in order that the feeding-rollers may separate from each other equally from a center line coincident with the plane ot the cutter T upon the entrance of a board between them, I pivot the levers 33.9410 each side of the slide-bed r3, and from the ends t3 153, equidistant from the pivot-stud a3, a pivoted connection is made to the carriers qg q3 by means of the equal connecting-rods r3 1:3, so that when either an outward or inward movement is imparted to one of the carriers qs a corresponding outward or inward movement will be imparted to the opposite carrier. The levers s3 sl are each provided with an equal horizontal arm g, the said arms being connected at their outer ends by means ot a pivoted connecting-rod h4, so that the angular movement of one of the levers will be directly imparted to the other. The lower lever s4 is also provided with the downwardly-extending arm w3, having at its lower end an eye m3, within which is held the sleeve g/S by means of the pointed pivotscrews a4 ctt, sufficient space b4 being allowed for vertically tilt-ing the sleeve g3 in the eye m3. Within the bore of the sleeve g3, and loosely fitting the same, is placed the rod c4, which at its inner end is pivoted to the downwardly-extendin g arm CZ attached to the frame A of the machine, and at its outer end is pro l vided with a screw-thread and the wheel-nut e, and between the wheel-nut e4 and the tilting sleeve if; is placed the spiral spring ft, by means of which the pressure of the feedingrollers upon the sides of the board can be regulated. At the inner side of the lever s'L upon the pivoted rod e'l is placed the adjustable collar g5, the location of which serves to determine the space between the peripheries of the feeding-rollers when the carriers qs qa are forced together by the action of the spring f'1 upon the sleeve l1/D and lever si, which distance should-be slightly less than the thickness of the board to be operated upon, so that upon the entrance of the board between the feed-rollers the said rollers will be pressed slightly apart, and thus the full pressure of the spring f4 will be exerted to hold theV peripheries of the feeding-rollers against the sides of the board.

The guide-plates i1/4 are made adjustable upon the guide-bars m4 m4 by means of the screws j* and slots tt, the said guide-bars being pivoted at each end to the carriers qS Q3 of the corresponding feeding-rollersE and Eat opposite sides of the slide-bed by means of the screw-studs n4 n4, so that when the board first enters between the peripheries of the irst pair of feeding-rollers E E, thus forcing the same apart, the opposite side guide-plates t t will serve to guide the en d of the board centrally over the cutter T until the feedingrollers E Ef are made to receive and act upon the forwardly-progressing end of the board. The end of the board will thus be kept steady in its transit from one set of feeding-rollers to the other over the cutter T.

The feeding-rollers E E E E are driven by means of a system of gears oJg p4 p", as usual in such machines.

The inventions shown and describedin this speciticatiomwhieh are also shown, described, and claimed in Patent No. 403,201, dated May 14, 1889, are herein disclaimed.

I claim as my inventionl. In a matching-machine, the combination, with the cutter and the cutter-shaft, of a cutter-holding frame pivoted for movement in both a vertical and a horizontal plane, substantially as and for the purpose speeied.

2. 'In a matching-'n1achne, the combination, with the feeding-rollers, of the cutter-holding frame pivoted for movement in both a vertical and a horizontal plane, the cutter-shaft held in the pivoted frame, the cutter, and the vertically-adjustable gage for adjusting the IOO depths of the cut to be made in the edge of the board, substantially as described.

3. In a matching-maehine, the combination, with the feeding-rollers, of the cutter-holding frame pivoted for vertical movement, the cutter-shaft held in the pivcted trame, the cutter, the gage for adjusting the depth of the cut to be made in the edge of the board, and the spring-operated side guides adapted for equal movement toward or from the plane of the' cutter, substantially as described.

4. In a matchingmachine, the combination with the feeding-rollers, of the cutter-holding frame pivoted for movement in both a vel'- tical and a horizontal plane, the spring-guide for limiting the horizontal movement of the frame, the cutter-shaft held in the pivoted frame, the gage for adjusting the depth of the cut to be made in the edge of the board, and the spring-operated side guidesadapted for equal movement toward or from the plane of the cutter, substantially as described;

5. In a matching-machine, thecombination, with the feeding-rollers, of the cutter-holding frame pivotcd for movement in a vertical plane, the cutter-shaft held in the pivoted frame, the gage for adjusting the depth ofthe cut to be made in the edge of the board, and

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the spring-operated side guides provided with the shoes for resting upon the edge of the board and. adapted for equal movement toward or from the plane of the cutter, substantially as described.

6. In a matcl1ing-machine, the combination7 with the intervening cutter, of the opposite feeding-rollers, eac held on a separate carrier, and the levers connected to the opposite carriers and adapted to cause the equal movement of the feeding-rollers toward or from the plane of the cutter, substantially as described.

7. In amatcl1ing-1nachine,the combination, With the intervening cutter, of the duplicate sets of opposite feeding-rollers, each rollerbeing held on a separate carrier, the levers connected to the carriers of the opposite feedingrollers and adapted to cause the equal moveprovided with a cutter and duplicate set-s of opposite feeding-rollers, each roller being held on a separate carrier, of an intermediate guide pivote/d at each end to the corresponding carriers of each set of opposite feedingrollers, substantially as described.

BENJAMIN G. LUTHER. Witnesses:

W. G. B. HOPKINS, FREDK. J. BARNARD. 

